Answer:
Great impact.
Explanation:
The Dietary Guidelines has a great impact on nutrition in the United States of America because these Dietary Guidelines helps the health promotion at national level. Dietary guidelines refers to guidelines of food choices that will help an individual and population to lead a healthy life and reduce the risk of different types of diseases. Dietary Guidelines plays a great role in disease prevention and also provides a base for the federal nutrition policy and programs.
This could be many things. It's common for young girls you have irregular periods but could also be a health problem. There is also a possibility of pregnancy if she is sexually active.
The emergency room would be better in case its severe